| Bacterial expression and purification of biologically active human TFF2. | |
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MedLine Citation:
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PMID: 22467388 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Human trefoil factor 2 (hTFF2) is considered as one of the most important initiators of mucosal healing in the gastrointestinal tract by promoting cell migration and suppressing apoptosis. However, it is hard to obtain hTFF2 from human tissue and many recombinant hTFF2 produced in vitro exist as fusion proteins. The purpose of the present study was to produce native hTFF2 while maintaining its biological activities. The open reading frame of hTFF2 was inserted into a pET-32a(+) expression vector, and hTFF2-TRX fusion protein was successfully expressed in Escherichia coli and purified by Nickel-nitrilotriacetic acid affinity chromatography and reverse-phase HPLC steps. The recombinant fusion protein (purity>95%) was cleaved by Factor Xa at 23 Degrees Celsius to release hTFF2. After removal of Factor Xa and undigested fusion proteins, hTFF2 was purified and identified by SDS-PAGE and Western blotting. The yield of recombinant hTFF2 was about 5 mg/L. The recombinant hTFF2 could promote IEC-6 cells migration and in vitro wound healing via the activation of ERK1/2. Recombinant hTFF2 could also inhibit apoptosis of HCT-116 cells induced by 50 μmol/L ceramide. In summary, our results showed that the recombinant hTFF2 was expressed in E. coli and successfully purified after cleavage with the fusion partner with high yield while maintaining its biological activities. Recombinant hTFF2 might be useful for investigating the molecular mechanism of hTFF2 and development of hTFF2-related drugs. |
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Authors:
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Yong-Hui Zhuang; Si-Man Li; Guo-Yu Yu; Yong Zhang; Yang Xiang; Hao Zou; Wen-Hui Lee |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Dong wu xue yan jiu = Zoological research / "Dong wu xue yan jiu" bian ji wei yuan hui bian ji Volume: 33 ISSN: 0254-5853 ISO Abbreviation: Zool. Res. Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-04-02 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100961499 Medline TA: Dongwuxue Yanjiu Country: China |
Other Details:
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Languages: eng Pagination: 144-50 Citation Subset: IM |
Affiliation:
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Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming Yunnan 650223, China. newzouhao@163.com. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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